358 Mr. A. Bell on the Crag-Fauna. 



to base ; ribs stout, straight, widely separated ; top whorls 

 finely cancellated ; spire long and pointed ; mouth occupy- 

 ing two-fifths or less of the length ; canal very short and 

 open ; labial notch deep, not very broad, situate upon the 

 shoulder of the whorl ; columellar lip straight, slightly 

 polished, the whole of the lower whorls covered with fine 

 striae, some of which are occasionally more elevated than 

 the others. Long. -^ in. C. C. Gedgrave. 



* Pleurotoma wofato, A.Bell,n.sp. Shell fusiform ; whorls 7-8, 

 convex, ornamented with ribs (8-9 on the second whorl) set 

 erect and widely apart, diminishing in size towards the top, 

 body- whorl falling in rapidly towards the base, forming 

 an open canal ; mouth narrow, outer lip sharp, inner lip 

 strongly reflected over a slightly sinuous pillar ; suture 

 deep. The whole of the shell is covered with fine spiral 

 striae, some of which (6-8 on the body, diminishing to 2 

 on the next whorl) are coarse and elevated. In one of my 

 specimens these coarse striae are coloured pink. Marks of 

 growth distinct ; notch moderate, situated between the su- 

 ture and shoulder of body-whorl. Long. -i%, lat. -^ inch. 

 C. C. Gedgrave. 



* volvula, A. Bell, n. sp. Shell shuttle-shaped ; whorls 



6-7, flatly convex; ribs rather strong and oblique; suture 

 channelled ; spire shortly conical, apex pointed ; body- 

 whorl long; mouth narrow, canal longer than in last 

 species ; inner lip reflected over a nearly straight pillar ; 

 sm*face finely striated ; notch as in last species. C C. 

 Gedgrave. 



elegantultty A. Bell, n. sp. Shell stoutly fusiform 



whorls 7-9, convex, ornamented with close-set ribs, 10-12 

 on the second whorl ; sutm-e deep ; mouth and canal o^Dcn, 

 pillar-lip reflected ; notch sinuated rather deeply. 



This species may be distinguished from P. notata by its 

 stouter build and aspect, the greater number and promi- 

 nence of the ribs, the spiral strije being less pronounced ; 

 one, however, from its thickness, gives a subangulated 

 look to the body and lower whorls, in which the ribs 

 hardly reach the suture. Long, -j^ inch, lat. -^ inch. 

 C. C. Gedgrave. 



The above three species have a general resemblance to 

 each other ; but as there are sufficient differences in them 

 to enable a distinction to be made, I have considered them 

 as separate species. 

 ^•6'o«o/>?e««?'a cra.s-.sa, A. Bell, n. sp. Sliell thick, shortly co- 

 nical, smooth, polished ; spire occupying about lialf tlie 

 length of the shell, apex pointed; whorls 8-10, slightly 



